Removed dependency on github and added octofish only as a development dependency
Update readme with slightly more accurate info given 0.4.2
Added getNav back to viperfish core
Added underscore and let viperfish extend its core with a module

Module is still hardcoded at the moment
Updates to routes and getNav to use the API defined by the content delivery mechanism
Removed githubapi options from config

These shouldn't be here as they are only needed in octofish
v0.4.3 Version bump as using the defined API for content delivery mechanism
Updates to the build log within the readme
Added getContent virtual function

It isn't a true virtual function of course